A layered material obtained by setting up a stationary ultrasonic wave in a partially crystalline glass melt

A stationary ultrasonic wave was set up in a lead borate glass melt containing dispersed SnO2 particles. This melt had a temperature of 600°C and a viscosity of 32 dPa s. During this treatment, the SnO2 particles moved to the pressure nodes of the stationary wave. After cooling, a layered structure with a periodic arrangement of SnO2 particles in the glassy matrix was obtained. According to the frequency applied and the velocity of the sound, stripes containing the SnO2 particles had a separation of around 800 μm.